import { Dictionary } from './internal';
/**
 * Interface for an EntityState.
 * Includes the entities in an object literal, the loading and error state and the ID of the active selected entity.
 */
export interface EntityStateModel<T> {
    entities: Dictionary<T>;
    loading: boolean;
    error: Error | undefined;
    active: string | undefined;
    ids: string[];
    pageSize: number;
    pageIndex: number;
    lastUpdated: number;
}
export declare type StateSelector<T> = (state: EntityStateModel<any>) => T;
export declare type DeepReadonly<T> = T extends (infer R)[] ? DeepReadonlyArray<R> : T extends Function ? T : T extends object ? DeepReadonlyObject<T> : T;
export interface DeepReadonlyArray<T> extends Array<DeepReadonly<T>> {
}
export declare type DeepReadonlyObject<T> = {
    readonly [P in keyof T]: DeepReadonly<T[P]>;
};
/**
 * Function that provides an ID for the given entity
 */
export declare type IdProvider<T> = (entity: Partial<T>, state: EntityStateModel<T>) => string;